YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.68 | 33.05 | 16.48 | a | 32.40 | i | ||
1963 | 1.95 | c | 8.86 | 29.71 | 44.13 | 53.05 | 65.37 | 70.79 | b | 63.73 | a | 59.75 | 56.35 | 35.93 | 9.00 | b | 41.55 | |||||||||
1964 | 18.84 | 18.76 | 22.89 | 41.30 | 59.93 | a | 61.67 | 68.82 | c | 61.97 | 54.95 | 46.69 | 33.12 | a | 10.43 | b | 41.61 | |||||||||
1965 | 6.55 | a | 8.74 | a | 17.97 | 40.48 | 56.71 | 59.92 | 64.35 | d | 63.60 | 49.93 | 47.44 | 29.55 | 23.02 | a | 39.02 | |||||||||
1966 | 2.25 | a | 16.19 | a | 30.50 | 36.45 | a | 49.79 | 63.82 | 70.16 | 63.35 | 56.43 | 45.42 | 28.22 | 16.47 | 39.92 | ||||||||||
1967 | 14.39 | 7.39 | 27.68 | 39.95 | 46.98 | 60.48 | 65.27 | 62.48 | 57.83 | 44.23 | 27.67 | 18.47 | 39.40 | |||||||||||||
1968 | 11.77 | 12.95 | 35.40 | 43.00 | 50.16 | 61.31 | a | 66.79 | 65.15 | 57.88 | 49.18 | 31.25 | 15.60 | 41.70 | ||||||||||||
1969 | 10.52 | 16.23 | 23.02 | 43.27 | b | 54.53 | 55.47 | 65.62 | a | 66.65 | 56.67 | 42.24 | 29.82 | 17.81 | 40.15 | |||||||||||
1970 | 2.74 | 11.00 | a | 20.02 | 39.88 | 49.69 | 62.42 | 68.81 | 64.34 | 56.20 | 46.92 | 29.03 | a | 15.15 | 38.85 | |||||||||||
1971 | 1.74 | 13.07 | 21.15 | 40.81 | d | 48.84 | 64.37 | 61.81 | 61.52 | a | 56.65 | 50.18 | 29.74 | a | 15.98 | h | 40.90 | a | ||||||||
1972 | -0.35 | d | 6.16 | 18.55 | 34.76 | a | 56.47 | 59.85 | 64.71 | 63.58 | 52.80 | 41.84 | b | 29.43 | 10.29 | 36.51 | ||||||||||
1973 | 13.38 | a | 16.02 | 34.40 | 39.75 | 49.60 | 63.48 | 65.71 | 66.93 | a | 54.45 | ----- | z | ----- | z | ----- | z | 44.86 | c | |||||||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.41 | n | ----- | z | ----- | z |
1978 | 5.37 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.37 | k | |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.86 | a | 22.77 | c | 26.31 | j |
1980 | 10.69 | b | 13.02 | 23.52 | b | 44.17 | a | 58.53 | a | 63.07 | b | 70.09 | b | 66.18 | 55.72 | a | 40.73 | 32.37 | 14.26 | 41.03 | ||||||
1981 | 15.26 | 20.18 | 30.83 | a | 44.41 | a | 52.71 | b | 61.96 | e | 68.11 | 67.98 | d | 55.88 | 44.05 | 37.15 | 17.36 | b | 42.99 | |||||||
1982 | 2.45 | b | 13.13 | a | 26.17 | b | 38.62 | a | 57.03 | b | 58.14 | a | 69.05 | a | 64.10 | b | 56.54 | c | 47.29 | b | 27.71 | a | 22.40 | 40.22 | ||
1983 | 16.21 | c | 24.63 | a | 28.40 | b | 36.95 | 49.66 | b | 62.30 | 71.81 | 70.97 | 59.62 | a | 45.48 | a | 31.57 | 5.24 | d | 41.90 | ||||||
1984 | 10.39 | c | 27.02 | 21.24 | 42.20 | 50.65 | a | 66.50 | 67.60 | 70.89 | d | 54.83 | x | 44.78 | o | 30.45 | a | 17.06 | 40.40 | b | ||||||
1985 | 9.81 | d | 13.46 | c | 32.87 | 45.96 | c | 57.41 | b | 59.28 | a | 65.96 | c | 62.30 | d | ----- | z | 45.43 | h | 24.42 | d | 5.63 | a | 37.71 | b | |
1986 | ----- | z | ----- | z | ----- | z | 46.54 | d | 56.14 | c | 62.96 | b | 69.17 | b | 63.38 | a | 57.43 | b | 45.44 | 26.58 | 20.55 | 49.80 | c | |||
1987 | 18.39 | ----- | z | ----- | z | 48.32 | 57.31 | 66.73 | b | 70.48 | c | 66.02 | a | 61.23 | b | 41.21 | 34.24 | a | 23.60 | 48.75 | b | |||||
1988 | 9.24 | ----- | z | ----- | z | 43.10 | 60.34 | 67.52 | 72.37 | d | 68.56 | 58.14 | a | 41.06 | 31.62 | 16.06 | 46.80 | b | ||||||||
1989 | 15.84 | f | 8.00 | b | 22.34 | 40.42 | 53.76 | 61.65 | 70.42 | a | 67.86 | c | 58.72 | 47.48 | 25.77 | 6.05 | 42.04 | a | ||||||||
1990 | 22.39 | ----- | z | ----- | z | 44.20 | 50.50 | a | 64.33 | c | 67.79 | b | 66.62 | a | 58.54 | b | 45.15 | 34.75 | 15.44 | 46.97 | b | |||||
1991 | 9.12 | b | 22.35 | d | 29.53 | 45.47 | 57.59 | b | 64.88 | b | 66.30 | a | 68.18 | c | 56.32 | b | 43.37 | 23.73 | 17.60 | 42.04 | ||||||
1992 | 17.61 | 22.85 | c | 27.47 | a | 38.09 | a | 57.38 | a | 59.67 | a | 60.91 | c | 62.08 | 56.81 | c | 44.39 | 28.33 | 18.06 | 41.14 | ||||||
1993 | 14.71 | c | 14.98 | d | 27.02 | a | 37.70 | 52.50 | b | 59.43 | a | 66.47 | 66.04 | g | 51.21 | b | 41.84 | b | 27.41 | b | 18.95 | 37.48 | a | |||
1994 | -0.43 | a | 6.76 | c | 31.14 | b | 40.34 | b | 55.95 | 64.50 | a | 66.15 | d | 64.73 | c | 60.59 | a | 48.67 | d | 35.45 | 26.47 | m | 43.08 | a | ||
1995 | 15.23 | a | 13.76 | c | 30.85 | a | 35.59 | a | 53.34 | 66.74 | a | 68.76 | b | 70.93 | b | 57.44 | e | 45.61 | 21.25 | 13.02 | c | 41.04 | ||||
1996 | 5.02 | a | 13.70 | d | 20.79 | 34.98 | a | 50.28 | a | 62.93 | b | 63.71 | b | 66.88 | b | 56.96 | b | 46.53 | b | 23.28 | 14.67 | a | 38.31 | |||
1997 | 9.05 | 18.21 | 25.45 | 38.74 | a | 46.11 | d | 65.20 | b | 65.64 | c | 62.85 | a | 59.40 | a | 47.81 | 27.33 | c | 25.11 | 40.91 | ||||||
1998 | 17.92 | a | 31.46 | a | 27.98 | 44.64 | a | 57.56 | d | 61.28 | 67.78 | a | 69.25 | a | 63.83 | 48.83 | a | 34.55 | 21.85 | 45.58 | ||||||
1999 | 10.87 | a | 24.14 | 30.80 | c | 43.20 | 56.55 | 64.68 | 71.56 | 66.08 | a | 58.47 | 45.06 | 38.28 | 21.39 | 44.26 | ||||||||||
2000 | 12.40 | b | 23.69 | 36.84 | 40.32 | 56.71 | 60.15 | 66.45 | a | 66.48 | a | 57.07 | 50.89 | 31.21 | a | 7.42 | 42.47 | |||||||||
2001 | 19.18 | 11.98 | 26.73 | 44.19 | a | 56.66 | 64.22 | 68.48 | 69.68 | a | 56.83 | 46.12 | c | 42.12 | 24.93 | b | 44.26 | |||||||||
2002 | 21.45 | 24.66 | 20.35 | 40.32 | 49.69 | 65.22 | 70.55 | c | 67.10 | a | 61.23 | 39.37 | 27.58 | 19.85 | a | 42.28 | ||||||||||
2003 | 8.62 | a | 8.38 | b | 25.02 | a | 36.70 | b | 51.37 | 60.07 | a | 65.77 | a | 67.40 | 58.27 | 44.06 | 30.59 | a | 23.28 | d | 39.96 | |||||
2004 | 4.45 | b | 18.29 | 28.69 | 40.38 | ----- | z | ----- | z | 63.67 | b | 59.37 | 63.40 | f | 46.38 | e | 34.81 | a | 15.59 | c | 34.63 | c | ||||
2005 | 8.02 | a | 21.20 | a | 25.50 | j | 45.79 | r | 51.19 | g | 65.29 | k | 67.16 | b | 65.06 | e | 61.91 | a | 46.86 | b | 39.61 | u | ----- | z | 45.03 | f |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 10.48 | 16.10 | 26.73 | 41.09 | 53.76 | 62.62 | 67.43 | 65.67 | 57.40 | 45.77 | 30.52 | 16.60 | 41.13 | |||||||||||||
S.D. | 6.33 | 6.52 | 5.00 | 3.42 | 3.84 | 2.75 | 2.74 | 2.88 | 2.82 | 3.33 | 4.41 | 5.55 | 2.03 | |||||||||||||
SKEW | 0.01 | 0.38 | 0.06 | -0.03 | -0.17 | -0.32 | -0.27 | 0.06 | -0.36 | 0.60 | 0.29 | -0.49 | 0.05 | |||||||||||||
MAX | 22.39 | 31.46 | 36.84 | 48.32 | 60.34 | 67.52 | 72.37 | 70.97 | 63.83 | 56.35 | 42.12 | 25.11 | 45.58 | |||||||||||||
MIN | -0.43 | 6.16 | 17.97 | 34.76 | 46.11 | 55.47 | 60.91 | 59.37 | 49.93 | 39.37 | 21.25 | 5.24 | 36.51 | |||||||||||||
YRS | 36 | 33 | 32 | 36 | 35 | 35 | 37 | 36 | 34 | 35 | 37 | 35 | 24 |